How did you install 4.0.5? There is an installer option that will install 4.0.5 with ejb3 or clustered-ejb3. If you are installing ejb3 onto a pre-existing, non-ejb3 4.0.5, download EJB3 RC9 Patch 1 from http://sourceforge.net/project/showfiles.php?group_id=22866&package_i... Follow the instructions - there is an ant script to install ejb3 onto your existing installation View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4033205#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...